ⲩ, 20th letter of alphabet, called ϩⲉ (My 123) S, ϩⲉ, ⲩⲉ (K 1), ⲩⲁ (Stern p 418) B, او (P 44 125).As numeral BF = 400 (ϥⲧⲟⲟⲩ ⲛϣⲉ, ϥⲧⲉⲩϣⲉ).Vowel ⲩ replaces ⲁⲓ, as ⲕⲩⲛⲏ (Gu 83); or ⲉ, as ⲃⲉⲕⲩ (Kr 141), ⲇⲣⲁⲡⲩⲍⲁ (BMis 7), ⲕⲩⲃⲏⲧ (Keft ST 42), ϫⲩⲡⲟ (BM 1224), ⲥⲕⲩⲡⲁⲍⲉ (Z 282), ϩⲩ (Kr 11); or ⲏ (oftenest), as ⲁⲥⲕⲩⲧⲏⲥ (Z 265), ⲕⲩⲣⲓⲝ (BMis 302), ⲡⲗⲩⲅⲏ (MG 25 331), ⲍⲱⲩ (AZ 33 132), ⲥⲙⲩ (CO 282), ϩⲩⲙⲁⲓ (J 66 26); or ⲓ, ⲉⲓ, as ⲁⲃⲩⲥⲁ (Ἀβεισά J 11 24), ⲇⲩⲇⲓⲙⲟⲥ (AM 287), ⲇⲩⲁⲑⲩⲕⲏ (BMis 520), ϩⲩⲛⲓⲙ (C 86 318); or ⲟⲓ, as ϩⲉⲇⲩⲙⲟⲥ (Kr 11), ⲥⲧⲩⲭⲉ (CO 300).

ⲟⲩ as consonant derived from hierogl w, as ⲟⲩⲁ, ⲟⲩⲱⲧⲛ, ⲥⲟⲟⲩϩⲉ, ⲧⲱⲟⲩⲛ, ⲉⲟⲟⲩ, ⲛⲁⲩ; rarely from b, as ⲥⲓⲟⲩ;replaced by ⲃ, as ⲃⲏⲣ, ⲃⲱϩⲙ, ⲃⲁⲕⲃⲉⲕ, ⲁⲃⲏⲧ, ⲙⲁϩⲃⲁⲗ, ⲣⲁⲃⲏⲟⲩⲧ, ϣⲃⲉ; or (rarely) replaces it, as ⲉⲩⲉⲓⲏⲛ (J 73 3), ⲟⲩⲏⲏⲃ (ⲃⲏⲃ BAp 79), ⲃⲟⲩϩⲉ (ⲟⲩⲱϩⲉ BMis 486), ⲉⲣⲧⲁⲩ (ib 494); or has assimilated it, as ⲟⲩϣⲏⲙ (ⲃⲟⲩϣⲏⲙ), ⲟⲩⲉ- (ⲟⲩⲃⲉ-), ⲟⲩⲁϣ (ⲟⲩⲃⲁϣ); or supplemented by it, as ⲟⲩⲃⲗⲗⲉ (BMis 301), ⲟⲩⲃⲟⲛ (Cai Kopt Kunst 118), ⲟⲩⲃⲉⲧ (C 86 218), ⲟⲩⲃⲱⲛϣ (MG 25 153); conversely ⲟⲩⲃⲏⲙⲁ (Worr 283). For Latin v in ⲟⲩⲏⲗⲟⲛ (R 1 1 33, Ryl 238, but ⲃⲏⲗⲗⲟⲛ DeV 2 149).As vowel for ⲟ, as ⲁⲡⲟⲩⲗⲟⲅⲓⲍⲉ (J 122 32), ⲕⲣⲟⲩϥ ib 12 16), ⲙⲟⲩⲛⲁⲭⲟⲥ (Rec 37 57, JSch 1 118), ⲥⲙⲟⲩⲧ (J 7 42); or ⲱ, as ⲟⲩⲣϫ (J 111 19), ⲟⲩⲗⲁⲣⲓⲟⲛ (ὠράριον Miss 4 69), ⲟⲩⲫⲩⲗⲓⲁ (JSch 1 19); regularly in A, as ⲟⲩⲟⲩ (S ⲟⲩⲱ), ϫⲟⲩ, ϣⲟⲩⲟⲩⲧ, ϩⲟⲩⲟⲩ⸗, ⲡⲟⲩⲟⲩⲛⲉ, ⲧⲟⲩⲟⲩⲃⲉ & after ⲙ, ⲛ, as ⲁⲙⲟⲩⲛ, ⲙⲟⲩⲧⲉ, ϣⲙⲟⲩⲛ, ⲙⲛⲟⲩⲧ, ⲛⲟⲩⲧⲉ;ⲟⲩ- often prefixed to init ⲱ, esp in Edfu MSS, as ⲟⲩⲱϣ (BMis 160), ⲟⲩⲱⲣϫ (ib 236), ⲟⲩⲱⲃϣ (ib 510), ⲟⲩⲱϫⲛ (BAp 170), ⲟⲩⲱⲣⲕ (J 67 62); conversely om, as ⲱⲛϩ (BMis 193), ⲱϣ (BMar 51), ⲟϣⲉⲙ (C 86 205).Cf in general Sethe Verbum 1 162, Ep 1 240 ff.ⲟⲩ transcribes Ar و, as ⲉⲑⲗⲟⲡⲟⲩ اطلبو, ⲓⲉⲭⲟⲩⲛ يكوب, ϩⲟⲩ هو (EW 234 ff, initial و is ⲃⲉ-); or ﹹ, as ⲡⲟⲩⲣⲁⲧⲉ بُرادة, ⲙⲟⲩⲥⲁⲁⲧ مُصعّد (AZ 23 118), ϭⲟⲩⲡⲡⲉ جُبّة (MR 5 55); transcribed by و, as واب ⲟⲩⲁⲃ, نودي ⲛⲟⲩϯ, اووه ⲟⲩⲟϩ (BIF 5 92 ff), اشمون ϣⲙⲟⲩⲛ, مرقوريوس ⲙⲉⲣⲕⲟⲩⲣⲓⲟⲥ.